Analytical modelling of the transient thermal field of a tubular bus in nominal rating

Jerzy Gołębiowski , Marek Zaręba

Abstract

Purpose The purpose of this paper is to analyse the dynamics of a thermal field generated in a tubular bus with rated current by using two models of electrical resistivity of copper. Design/methodology/approach The boundary-initial problem of the modified heat equation was formulated for the tubular bus. Analytical solutions were obtained by means of Green’s functions as the kernels of the integral operator inverse to the corresponding differential operator. The results were presented graphically and verified using the finite element method. The calculations were made by considering the example of the Storm Power Components tubular bus (USA). Findings Analytical field models were used to determine time- and space-variable heating curves, time constants and steady-state current ratings. Research limitations/implications This paper is related to the structure of a hollow cylinder. Other bus sections can be taken into account by using the coordinate systems of different curvilinear orthogonal symmetry. Originality/value Using the analytical method, the influence of the variable (temperature dependent) electrical resistivity on some important parameters and characteristics of the tubular bus was investigated. The system was considered as an element with distributed parameters.
Author Jerzy Gołębiowski (FEE / DTEM)
Jerzy Gołębiowski,,
- Department of Theoretical Electrotechnics and Metrology
, Marek Zaręba (FEE / DTEM)
Marek Zaręba,,
- Department of Theoretical Electrotechnics and Metrology
Journal seriesCompel-The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, ISSN 0332-1649, (N/A 40 pkt)
Issue year2019
Vol38
No2
Pages642-656
Publication size in sheets0.7
ASJC Classification1703 Computational Theory and Mathematics; 1706 Computer Science Applications; 2208 Electrical and Electronic Engineering; 2604 Applied Mathematics
DOIDOI:10.1108/COMPEL-02-2018-0078
Internal identifier000045465
Languageen angielski
Score (nominal)40
Score sourcejournalList
ScoreMinisterial score = 40.0, 13-03-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.731; WoS Impact Factor: 2018 = 0.705 (2) - 2018=0.685 (5)
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